The speed of light in air is 3 x 108ms-1. What is the speed in glass with a refractive index of 1.50?
-
A.
1.5 x 108ms-1 -
B.
3.0 x 108ms-1 -
C.
2.0 x 108ms-1 -
D.
6.0 x 108ms-1
Correct Answer: Option C
Explanation
1.5 = (frac{3 times 10^8}{v})
v = 2.0 x 108ms-1